When the upper stopping pawl comes to rest on the upper stopping lever, it forces the adjusting screw in the lower part of the upper stopping lever against the lower stopping lever, and the bottom end of the lower stopping lever causes the forked lever to force the collar out, throwing the clutch out of action and stopping the machine. This gives a horizontal movement from a vertical action. The automatic stop pawl should rest on the upper stopping lever ¼ of an inch when the machine is at normal. This adjustment is made by loosening the set screw which holds the shaft in the vertical starting lever, and moving the lever sidewise. When the stopping pawl rests ¼ of an inch on the upper stopping lever, the automatic safety pawl will also rest on it exactly the same, as both pawls are adjusted the same.
Fastened to cam No. 10 are two pawls. One is the automatic stopping pawl and stops the machine after it has made one complete revolution. The other is the automatic safety pawl, and stops the machine when a line fails to transfer from the first to the second elevator. These two pawls are adjusted by screws that pass through the pawl and strike the lug of the cam, and are held against this lug with a spring. The distance from the left-hand side of the pawl to the left-hand side of the cam should be 15/16 of an inch.
The vertical lever is fastened to the column, at the back of the machine above the forked lever, by a hexagon head machine screw at its upper end. The lower end is held in place by the shaft which passes through the lever into the machine frame. The only time the vertical lever is in action is when the machine is started by the starting and stopping lever. On the starting lever is an eccentric screw which stands behind the lower lug of the vertical lever. When the starting and stopping lever is pulled out, the eccentric screw engages the lower lug and pulls it forward, causing the upper lug to push the stopping or safety pawls clear of the upper stopping lever. There are three lugs on the vertical lever: The upper lug, the lower lug, and the lug inside of the bracket.
There is a headless screw in the vertical lever bracket, the front end encircled by a spring. This spring forces the vertical lever back to its normal position after the lever has been pulled forward by the starting and stopping lever. When pulled forward, the upper lug strikes against the automatic stopping pawl forcing it clear of the upper stopping lever. This adjustment is made by means of the headless screw in the lever bracket. The proper adjustment forces the stopping pawl 1/16 of an inch clear of the upper stopping lever. The lug inside the bracket should permit the upper lug to clear the stopping pawl 1/64 of an inch when the lug is at rest. This adjustment is made by turning the adjusting screw in the column opposite the headless screw. This screw regulates the stroke of the inner lug.
Unless the upper vertical lug, after pushing the stopping pawls off the upper stopping lever, returns clear of the pawls, it would prevent the pawls from seating properly on the upper stopping lever.
The adjustment of the lower lug of the vertical lever and the eccentric screw on the starting lever should be made by releasing the set nut on the eccentric screw and turning the screw until there is 1/32 of an inch between the screw and the lug. If this adjustment is not properly made it will interfere with the upper lug and throw it out of adjustment.
Friction Clutch Hints
To remove the friction clutch: Push in on the starting and stopping lever. Take out the fulcrum screw or remove the nut from the outer end of the clutch rod. Remove the clutch arm key screw. The clutch can now be removed. Be careful in replacing the friction to have the key with the bevel down and toward the back of the keyway.
The driving pulleys or gear can be removed only when the friction clutch is removed.
To remove the clutch rod spring: Remove the friction clutch. Unscrew the screw bushing from the end of the shaft, take out the screw extending through the collar, and pull out the clutch rod and the spring.